ArticleA CONVENIENT AND EFFICIENT SYNTHESIS OF CONDENSED 1,3-DIPHENYLPYRAZOLES : SYNTHESIS OF SOME NEW PYRANOPYRAZOLE , PYRAZOLOPYRANOPYRIMIDINE AND PYRA-ZOLOPYRANOTRIAZOLOPYRIMIDINE DERIVATIVES
ArticleA CONVENIENT AND EFFICIENT SYNTHESIS OF CONDENSED 1,3-DIPHENYLPYRAZOLES : SYNTHESIS OF SOME NEW PYRANOPYRAZOLE , PYRAZOLOPYRANOPYRIMIDINE AND PYRA-ZOLOPYRANOTRIAZOLOPYRIMIDINE DERIVATIVES